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Comparison of bonded-particle numerical model results with indirect tension experimental results for Dionysos marble

Kaklis Konstantinos, Νομικός Παύλος, Karatza Zeynep, Agioutantis Zacharias

Απλή Εγγραφή


URIhttp://purl.tuc.gr/dl/dias/BC322776-00DF-4083-9341-52F1F94E288E-
Αναγνωριστικόhttps://www.onepetro.org/conference-paper/ARMA-2019-1788-
Γλώσσαen-
Μέγεθος6 pagesen
ΤίτλοςComparison of bonded-particle numerical model results with indirect tension experimental results for Dionysos marble en
ΔημιουργόςKaklis Konstantinosen
ΔημιουργόςΚακλης Κωνσταντινοςel
ΔημιουργόςΝομικός Παύλοςel
ΔημιουργόςNomikos Pavlosen
ΔημιουργόςKaratza Zeynepen
ΔημιουργόςAgioutantis Zachariasen
ΔημιουργόςΑγιουταντης Ζαχαριαςel
ΕκδότηςAmerican Rock Mechanics Association en
ΠερίληψηIn this study, results from two series of indirect tensile tests on Dionysos marble specimens, the Brazilian test and the ring test, are compared to those evaluated numerically by using the distinct element code PFC2D. Circular disc specimens with a diameter of 54 mm were prepared and tested in the laboratory. Specimens with different hole diameters were tested with respect to the ring test. The numerical simulations of this study were performed using the Bonded Particle Model (BPM) in PFC2D. The initial selection of the BPM micro-parameters was based on diagrams relating the PFC2D parameters and the synthetic rock properties. The models were calibrated by numerically simulating uniaxial compression tests and Brazilian tests. The ring-test PFC2D models were developed with the same specimen geometries as those of the laboratory tests and by applying the calibrated BPM micro-parameters. The numerically obtained fracture loads are compared to those measured experimentally. Furthermore, the evolution of bonds breakage during the simulation is compared to the rock fracture patterns observed during failure of the specimens. The simulation results demonstrate that both the macro-mechanical response and the failure process can be modeled using BPMs. Differences between the numerical results and the macroscopic marble behavior are discussed.en
ΤύποςΠλήρης Δημοσίευση σε Συνέδριοel
ΤύποςConference Full Paperen
Άδεια Χρήσηςhttp://creativecommons.org/licenses/by/4.0/en
Ημερομηνία2020-11-25-
Ημερομηνία Δημοσίευσης2019-
Θεματική ΚατηγορίαDionysos marble en
Βιβλιογραφική ΑναφοράK. N. Kaklis, P. P. Nomikos, Z. T. Karatza and Z. G. Agioutantis, "Comparison of bonded-particle numerical model results with indirect tension experimental results for Dionysos marble," in 53rd U.S. Rock Mechanics/Geomechanics Symposium, New York City, New York, 2019.en

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